Shaft sealing and alignment assembly for a pump assembly
AssigneeLittle Giant Pump Company
InventorsLee W. Davis, Randy W. Karbs, Ron L. Baumgarner
Life of this patent
Estimating the term…
Abstract
An improved pump assembly having a housing assembly, a motor assembly and a pump, the housing assembly having a motor mounting plate supporting the motor assembly and the pump. The motor assembly has a motor with a rotatable shaft extending through a shaft aperture in the motor mounting plate to operatively connect to an impeller of the pump. The motor assembly includes a shaft sealing and alignment assembly which provides precise alignment and sealing of the rotatable shaft by a shaft seal mount and a shaft seal disposed in a precisely configured shaft seal bore therein. The shaft seal mount attaches to the motor and has its distal end disposed in the shaft aperture of the motor mounting plate.
Claims14
An improved pump assembly comprising:
- a housing assembly comprising:
- a motor mounting plate having a shaft aperture;
- a motor housing attached to the mounting plate;
- and
- means for hermetically sealing the motor mounting plate and the motor housing;
- a motor assembly disposed within the housing assembly and supported on the motor mounting plate, comprising:
- a motor having a rotatable shaft extending coaxially through the shaft aperture;
- and
- a shaft sealing and alignment assembly comprising:
- a shaft seal mount having a first end attached to the motor assembly and having a second end forming a shaft seal bore, the second end of the shaft seal mount extending into and sealingly disposed in the motor mounting plate about the rotatable shaft;
- and
- a shaft seal disposed within the shaft seal bore, the shaft seal sealingly engaging a distal end portion of the shaft seal mount and sealingly engaging against the rotatable shaft;
- and
- a pump supported by the motor mounting plate and operatively engaged by the rotatable shaft.
An improved pump assembly comprising:
- a motor mounting plate having a shaft aperture;
- a motor housing attached to the mounting plate;
- a motor having a rotatable shaft, said motor disposed within the motor housing and supported on the motor mounting plate;
- means for hermetically sealing the motor mounting plate and the motor housing;
- a shaft sealing and alignment assembly comprising:
- a shaft seal mount having a first end attached to the motor and having a second end forming a shaft seal bore, the second end of the shaft seal mount extending into and sealingly disposed in the motor mounting plate about the rotatable shaft;
- and
- a shaft seal disposed within the shaft seal bore and sealingly engaging the rotatable shaft;
- and
- a pump supported by the motor mounting plate and operatively engaged by the rotatable shaft.
Dependencies are inferred from the claim text.